332 



374. PRENANTHES. Recepf. naked. Down nearly ses- 

 sile, simple. CaL double. Florets in a single row. 



372. SONCHUS. Recept. naked. Down sessile, simple. 

 CaL simple, imbricated, swelling at the base. 



380. LA PS ANA. Recept. nsiked. Down none. Cal. dou- 

 ble ; innermost of equal channelled scales. 



** Florets all tnbidar, lax and spreading in the limb, 

 Capitati. 



387. CARLINA. Calyx swelling; outer scales spinous ; 



inner coloured, polished, radiant. Recept. chaffy, 

 Dow?i feathery. 



382. ARCTIUM. CaZ. globose ; scales spinous, hooked, 



inflexed. 



384-. CARDUUS. Cal. tumid, imbricated ; scales spi- 

 nous. Recept. hairy. Down deciduous, capillary, 

 roughish. 



385. CNICUS. Cal. tumid, imbricated; scales spinous. 



Recept. hairy. Down deciduous, feathery. 



386. ONOPORDUM. Ca/.tuniid; scales^pinous, spread- 



ing. Recept. cellular, somewhat chaffy. 



383. SERRATULA. C«^. nearly cylindrical, imbricated; 



scales unarmed. Down permanent. 



Centaur ea. 1 . 



*** Carets all tubular^ parallel^ crowded^ neardy on 

 a level at the top. Discoid. 



389. EUPATORIUM. Recept. naked. Down rough. 



Cal. imbricated, oblong. Style cloven halfway down, 

 prominent. 



390. CHRYSOCOMA. Recept. naked. Down rough. 



Cal. imbricated, hemispherical. Style scarcely longer 

 than the florets. 



388. BIDENS. Recept. chaffy. Down rough with re- 



versed prickles. Cal. of many parallel, channelled 

 scales. Cor. occasionally radiated. 



391. DIOTIS. Recept. chaffy, with hairy-tipped scales. 



DoW7i none. Cal. imbricated, hemispherical. Flo- 

 rets with 2 spurs, which border the seed. 



Tanacelum . Senecio 1. Jster 1. Anthemis 2. 



